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These are fairly new, and the price sure is right! https://www.dultmeier.com/products/search/12010#

They are Poly, and not Kynar, so they should be rinsed out, but who knows ? I have seen some Poly pumps last awhile, even w/o being rinsed, and if these last awhile, who cares ?

At this price, simply toss it when it breaks

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On 11/5/2017 at 9:59 AM, Apple Roof Cleaning (813) 655-8777 said:

These are fairly new, and the price sure is right! https://www.dultmeier.com/products/search/12010#

They are Poly, and not Kynar, so they should be rinsed out, but who knows ? I have seen some Poly pumps last awhile, even w/o being rinsed, and if these last awhile, who cares ?

At this price, simply toss it when it breaks

Actually, they are not Poly at all. The manual says the housing is made out of NYLON :(  NYLON has a D Resistance to Sodium Hypochlorite according to the  chemical compatibility database https://www.coleparmer.com/Chemical-Resistance

Not sure how they can claim their pump is ok for caustics and corrosive alkaline chemicals ?

The do list their NYLON as being a modified form, so perhaps they have figured out how to make the NYLON have better SH resistance ?

 

 

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